OFFSET
1,1
COMMENTS
Superset of A043598. Differs from A043865, from A043857 and from A043843 because numbers with run lengths of 17, 16, 15 or 14 clearly exist which are in only one these sequences. - R. J. Mathar, Oct 20 2008
MATHEMATICA
Select[Range[5000], Mod[Length[Split[IntegerDigits[#, 4]]], 10]==7&] (* Harvey P. Dale, Mar 19 2012 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved